20098840

素因数分解:

$2^3\times 5^1\times {\mathrm{479}}^1\times {\mathrm{1049}}^1$

素因数の和:1539

約数の個数: 32

約数和(自身を含む): 45360000

約数和(自身を除く): 25261160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 479, 958, 1049, 1916, 2098, 2395, 3832, 4196, 4790, 5245, 8392, 9580, 10490, 19160, 20980, 41960, 502471, 1004942, 2009884, 2512355, 4019768, 5024710, 10049420, 20098840]

約数ペア:

[(1, 20098840), (2, 10049420), (4, 5024710), (5, 4019768), (8, 2512355), (10, 2009884), (20, 1004942), (40, 502471), (479, 41960), (958, 20980), (1049, 19160), (1916, 10490), (2098, 9580), (2395, 8392), (3832, 5245), (4196, 4790)]